Planoqraptl



W. H. UNDERWOOD.

-MILK BOTTLE CAP.

APPLICATION FILED OCT-25. I9l5.

1,315,802. Patented Sept. 9, 1919. I

warms n. unnnnwoon, on NEW YORK, NY.

. itrLK-iso'r'rLE CAP.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed October 25, 1915. serial No. 57,871.

To all whom it may concern Be it known that I, WALTER H. UNDER- woon, a citizen of the United States, and resident of New York, county and State of New York; have invented certain new and useful Improvements in Milk-Bottle Caps, of which the following is a specification.

My invention relates to bottle caps and has for its principal object to provide a cap en tirely of paper or similar material adapted especially for milk bottles and which may be readily extracted from the bottle without special devices. Another object is to provide the cap with a seal which will. indicate when the contents of the bottle have been tampered with. The above and other obj sets and the novel features of the invention will appear fromthe following description taken in connection with the accompanying drawing in which I y Figure 1 is a view illustrating a portion of a well known form of milk bottleand showing a cap embodying my invention bein extracted from the bottle.

Fig. 2 is a perspective view showing the separated parts of a cap embodying my invention.

Fig. 3 isa sectional view of a cap embodying my invention. y

Fig. i is a sectional view of a portion of a packing containing caps embodying my invention, and

Fig. 5 is a view illustrating a )ortion of a bottle fitted with another cap em odying my invention.

Referring to the drawing, the cap comprises a body part A which may be made from wood pulp or of a single piece of cardboard or paper pressed so as to provide a flat, wide, stiff peripheral flange 10 and a hollow depressed ortion 11 at the center. The depressed portion 11 shown in Figs. 1 2 and 3 is provided with a cylindrical wall 12 and is permanently closed at the bottom by a wall 13.

The upper open end of the depression 11 is closed by a frangible disk 14 of paper or other suitable material which is readily broken by the pressure of a finger on the part thereof over the depression 11. The thin disk 14: is secured to the fiat flange 10 by suitable means such as glue or cement and the to side thereof may have printed thereon suitable advertising.

In use, the cap is set in place in the mouth of the bottle so that the under side of the flange 10 thereof rests on and supports the ca on the usual interior shoulder 15 just be ow the lip 16 of the bottle B. The cap closely fits the mouth of the bottle above the interior shoulder 15 and seals the bottle. In order to extract the cap a finger is inserted through the frangible covering 1 1, breaking the latter, and into the depression 11, which is of sufiicient depth and width to admit of most of the first joint of the finger. The finger which grips the cap engages against the inside of the peripheral wall 12 which affords sufiicient friction on the ca so that byan upward pressureof the finger the cap may be lifted and drawn out of the mouth of the bottle as shown in Fig. 1. The finger which extracts the cap also obtains a slight frictional gripping hold on the broken portion of the paper disk 14, when the latter is used tocover the depression 11. The cap, which is not equipped with any special extracting means is thus readily extracted fromthe bottle without the use of a special appliance. By using a coverin disk such as the disk 14 the bottleis efi'ectlvely sealed and an unbroken seal indicates that the milk or contents of the bottle has not been tampered with.

In Fig. 1 I have illustrated a portion of a tube T in which the caps may be packed for convenience in handling large quantities of them. The caps shown in the tube T are different from the caps shown in Figs'l, 2 and 3 in that the peripheral walls 121 thereof are portions of conical surfaces so that central depressions thereof will readily nest in one another. Otherwise these caps are the same in construction as the cap shown in Figs. 1, 2 and 3. However the disks 14 of the caps having the frusto-conical depressions are packed separately and may be secured to the flanges 10 of these caps while the caps are being applied to the bottles or afterward, as it obviously would not be possible to nest such caps if their central depressed portions 111 were covered.

The bottle B shown in Fig. 5 is provided with a neck having an interior tapering opening 18 to receive a hollow tapering cap body 19 embodying my invention. The cap body 19 is provided with a bottom wall which permanently closes the cap at the bottom and with a frangible covering 21 for the top thereof, corresponding to the covering 14 in the form of cap shown in Fig. 2. The covering 21 is provided with a flange 22 by means of which it is secured to the body 19;

When it is desired to extract the cap 20 a finger is forced through the frangible cap 21 and by gripping the inner wall of the body 19 the ca may be extracted by upward pressure of the fingen While I have shown and described my in vention in detail I do not wishto be limited to the exact form of construction disclosed as slight changes may be made therein Without departing from the spirit of the invention.

Havingthus described my invention, what I claim and desire to secure by Letters Patent is: a a

1. A paper milk bottle cap having a stiff peripheral flange adapted to fit the interior shoulder near the mouth of an ordinary milk bottle, and a central ortion depressedbelow the plane of said ange and of suflicient width and depth to permit the insertion of a portion of the first joint of a finger for the purpose of extracting the cap from a bottle.

2. A paper bottle cap comprising a hollow body having a peripheral supporting flange adapted to seat on a shoulder within the mouth of a-bottle and permanently closed at the bottom, and. a frangible covering secured to the flange on the end of said body and closing said hollow body at the top, said covering being constructed to permit the, insertion therethrough of means for gripping the cap to extract it from the bottle. a

3. A paper bottle cap completely insertible into a bottle and having a peripheral supporting flange and a hollow body carried Copies oithis patent may be obtained for by said flange within the margin thereof,

v said hollow body extending into the bottle, below the plane of said flange and being closed at one end by a frangible covering and being of such'depth and width as to permit the insertion of a part of a finger through said covering for the purpose of gripping the cap to extract it from the bottle.

4. A paper milk bottle cap comprisinga stiff flange adapted to support. the cap on the interior shoulder near the mouth of an 0rdi nary milk bottle, a depressed central integral portion extending below the plane of said flange and shoulder, and a frangible paper disk secured to said flange and covering said depressed ortion, said depressed portion being of su cient depth and width to permit the insertion of means through said covering for the purposeof gripping thecap to extract it from the bottle.,

5. A: paper'milk bottle cap entirely insertible into the mouth of a bottle and comprising a paper body member having a hol low portiolrclosed at the bottom and of sufflcient size to permit the insertion of art of the first joint of a finger to extract tie cap, and a top member united to said body member and closing the hollow portion thereof but being of a quality of paper which is readily frangible by the pressure of a finger,

one of said members having a flange to which the other member is cemented.

In testimony whereof I aflix my signature.

WALTER H. UNDERWOOD.

five cents eaclnby addressing the Commissioner of Patents, Washington, D. G. 

